Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2007-08-21
2007-08-21
Woodward, Ana (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C209S019000, C209S021000, C209S133000, C528S489000, C528S490000, C528S493000, C528S494000, C528S495000, C528S496000, C528S499000, C528S500000, C528S50200C, C528S50200C, C528S930000
Reexamination Certificate
active
11249884
ABSTRACT:
A method for the extraction, separation, fractionation and purification of biopolymers from plant materials using supercritical and/or subcritical solvent extractions is disclosed. Specifically, the process can be used for the separation of resins and rubber from guayule shrub (Parthenium argentatum), and other rubber and/or resin containing plant materials, using supercritical solvent extraction, for example supercritical carbon dioxide extraction. Additionally, polar and/or non-polar co-solvents can be used with supercritical carbon dioxide to enhance the selective extraction of resins and rubbers from the shrub.
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Cornish Katrina
Marentis Rodger T.
Martin Jeffrey A.
Plamthottam Sebastian
Jennings Strouss and Salmon, PLC
McAuliffe Christine Meis
Woodward Ana
Yulex Corporation
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